Show TRC20 USDT pay address on the license page.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/license/license_lib.py

@@ -23,6 +23,11 @@ DEFAULT_OFFLINE_GRACE_HOURS = 72
 STATE_FILENAME = "license_state.json"
 LICENSE_ENV_NAME = "license.env"
 
+# USDT 收款（与授权站 app/plans.py 保持一致；可用环境变量覆盖）
+DEFAULT_USDT_ADDRESS = "TEqtozJKTEJ6qZcyvienpfyswaeAHXc8ks"
+DEFAULT_USDT_NETWORK = "TRC20"
+DEFAULT_WECHAT_ID = "dekun03"
+
 _lock = threading.RLock()
 _cached_device_id: str | None = None
 _env_loaded = False
@@ -61,6 +66,21 @@ def api_base_url() -> str:
     return url or DEFAULT_API_URL
 
 
+def usdt_address() -> str:
+    _load_license_env()
+    return (os.getenv("LICENSE_USDT_ADDRESS") or DEFAULT_USDT_ADDRESS).strip()
+
+
+def usdt_network() -> str:
+    _load_license_env()
+    return (os.getenv("LICENSE_USDT_NETWORK") or DEFAULT_USDT_NETWORK).strip() or DEFAULT_USDT_NETWORK
+
+
+def wechat_id() -> str:
+    _load_license_env()
+    return (os.getenv("LICENSE_WECHAT_ID") or DEFAULT_WECHAT_ID).strip() or DEFAULT_WECHAT_ID
+
+
 def client_key() -> str:
     _load_license_env()
     env_key = (os.getenv("LICENSE_CLIENT_KEY") or "").strip()